rotarX Capsulated Miniature Slip Rings for Power- and Signal Transmission
Compact Slip Rings with outer diameter from 5.5mm to 54mm
Number of rings: 3-125
Lifetime: 3 million to 100 million revolutions
Rated Current: 1-10A per ring
Transmission of field bus signals, Ethernet, USB, video signals, temperature, etc.
Combined solutions power + signals possible
Max. working voltage: 240 VAC/DC
Dielectric strength: ≥500V @50Hz
Electrical noise: max 35mΩ
Insulation resistance: 1000 MΩ @ 500 VDC
Housing diameter 5.0mm to 54.0mm
Possible flange solutions: rotor-flange, stator-flange, without flange
Rotational speed: 0-300 rpm (up to 3.000 rpm on request)
Contact material: silver-silver, gold-gold, special solutions on request
Cable length: freely definable, standard: 250mm (rotor/stator)
Different cable cross sections possible, connectors possible
Housing material: plastic, aluminum or stainless steel
Protection class: IP54 (higher on request, up to IP69K)
Working temperature: -20°C … +60°C (others on request)
Reliable Power and Signal Transmission through Capsulated Miniature Slip Rings
Wherever power is to be transmitted between a stationary and a rotating component, slip rings are still the reliable components of choice. Although Bluetooth, infrared or radio signal transmission also offers contactless transmission possibilities, these still have disadvantages such as susceptibility to interference radiation, which exclude them for many applications. At the latest however with the transmission of electrical energy the contact transmission is practically without meaningful alternative. The only possibilities of contactless current transmission are highly wear-promoting arcs or inductive systems that require high voltages. Neither of these is technically feasible in the sizes offered by the miniature slip rings. In addition, these components offer numerous other advantages.
Functionality of Capsulated Slip Rings
Capsulated miniature slip rings consist of a rotating and a stationary part. A series of contact rings are attached to the rotor, which are insulated from each other. To the inside, the contact rings are connected with an insulated cable which is led out of the slip ring to the front. Signal cables also run into the stator part, which end in sliding contacts. Incoming and outgoing cables always have the identical colors, so that the confusion-free assignment during installation is guaranteed. The sliding contacts touch the contact rings of the rotor inside the slip ring. The contacts are reinforced by a spring, which ensures reliable signal transmission within the technical parameters of the component. No matter at what angle the rotor is turned in relation to the stator, the transmission of signal or power current is always maintained in this way. The capsulation serves to shield the sensitive inner workings of the slip rings from external interference. All you need to ensure during installation is that the slip ring is positioned exactly in one axis with the rotating component. For this purpose, the capsulated miniature slip rings often have robust flanges with pre-drilled guides for the retaining screws.
Advantages of Capsulated Slip Rings
The encapsulation protects the inner life of the slip rings against the following disturbance variables, depending on the level of protection class and housing material:
- Penetrating dust
- Penetrating moisture
- Electrical interference fields
- Shocks, blows and vibrations
Penetrating dust, especially electrically conductive metal or coal dust, leads to short circuits in a very short time. Since the contact rings and sliding contacts are not insulated, they are extremely sensitive to dust penetration. Non-conductive dust can settle on the rotating components and form an unwanted insulation layer.
Penetrating moisture can cause corrosion of the contacts. To ensure maximum operational reliability, the contact rings and sliding contacts are coated with silver. This metal forms only a thin oxidation layer, which is immediately removed again automatically during normal operation of the slip ring. Alternatively, the surfaces can be provided with a gold alloy, which has a positive effect on signal transmission quality and prevention of oxidation.
Electrical disturbances penetrate less into the slip ring, but they can escape from it. Any slightest loss of contact can cause an arc, which emits a radio signal. This radio signal can disturb surrounding components, especially those with wireless signal transmission. The capsulation prevents these disturbing emissions and shields them reliably.
Finally, the capsulation is designed so robustly that it is largely insensitive to mechanical stress. For particularly demanding environments, we also offer capsulations made of stainless steel. These are also ideal for a hygienically critical environment. Stainless steel can be disinfected very well and has aseptic properties.
Variations of Capsulated Slip Rings
Installation of Capsulated Slip Rings
Use of Capsulated Slip Rings
Maintenance of Capsulated Slip Rings
Your way to the Capsulated Miniature Slip Rings
We supply you from quantity 1. Special shapes or special types are possible on request. Give us a call. We will discuss your challenges until we have found your optimal slip ring. Trust our competence and experience. Our capsulated miniature slip rings are used in tens of thousands of applications worldwide. Whether you need a one-off or a series component, we supply capsulated miniature slip rings that you can rely on completely.